An informal expression that is more often used in casual conversation than in formal speech or writing.A slang term used in the current culture. Since the culture evolves so will the slangterms/colloquialisms revelant to that era.

"Friends of the chancellor revealed that he had described Labour MPs as disappointing numpties, a colloquialism meaning idiots."
(Neil Rafferty, "Queen Opens a Pricey Piece of Scots History." The Sunday Times, Oct. 10, 2004)

"I think country gets dumped on across the board by the Grammys." (Toby Keith)